At least from my experience, that seems to be true.
As far as their Variaxes are concerned, they seem to be introducing quite some latency.
If I wanted something similar, I'd go Boss/Roland and get a GK pickup and perhaps an SY-1000.
Sure, it's nice to have it all straight in the guitar, but Roland has at least somewhat established a kind of standard, which is worth a lot once you need things to be fixed.